Railway-gate.



No.4 7os,5|s. v MmmmL Aug. l2," |902.

J, BowMAN.

RAILWAY GATE.` (Application med pac, 4.,/1901.,

vIO

UNITED STATES PATENT OFFICE.

JOHN BOW'MAN, OF lVESSlNGTON, SOUTH DAKOTA.

RAI LWAY-GATE.

SPECIFICATION forming part of Letters Patent N 0. 706,516, dated August12, 1902. Application filed December 4. 1901. Serial No. 84,694. (Nomodel.)

To a/ZZ whom it may concern:

Be it known that I, JOHN BOWMAN, a citizen of the United States,residing at Wessington, in the county of Beadle, State of South Dakota,have invented certain new and useful Improvements in Railway-Gates; andl do hereby declare the following to be a full, clear, and exactdescription ofthe invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to railway-gates; and it has for its object toprovide a gate for use at railway-crossings which will be operated by anapproaching train to move it in operative position and which after thetrain has passed will be automatically returned.

A further object of the invention is to provide such a specificmechanism connecting the track instrument with the gate as will insure aprompt and efficient operation of the gate.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in both views, Figure1 is a sectional view taken longitudinally of a portion ofrarailway-track at a crossing and showing the gate and its operatingmechanism constructedand arranged in accordance with the presentinvention, the gate being shown raised. Fig. 2 is a view similar to Fig.1 with the gate in lowered position.

Referring now` to the drawings, there is shown a portion of arailway-track at a crossing including a rail 5, and adjacent to thiscrossing is erected a post 6, upon which is pivoted a gate 7, one end ofwhich is adapted to lie across the crossing, while the opposite end 8 isweighted,vso as'to hold the gate normally in raised position, as'shownin Fig. 1. At the lower end of the post is pivoted an angular lever 9,one endofwhich is connected with a crank-arm 10 of a shaft mounted inthe post and on which the gate 7 is mounted, said connection beingthrough the medium of a connecting-rod 11. When this angular lever isoperated in one direction, the horizontal arm to which the rod 1l isattached is moved downwardly and actuates the crank arm 10 to move thegate into closed position. When the angular lever is released, theweights at the end 8 of the gate move the gate to its inoperativeposition.

To actuate the angular lever 9, a track device is employed and consistsof two links 13 and 14, which lie in a common plane longitudinally ofthe track and which are pivotally connected at their mutually adjacentends, the outer end of the link 13 being hinged to a plate 15, attachedto one end of the ties, while the outer end of the link 14: is slidablydisposed upon a plate 16 upon a different tie, and the connected ends ofthe links lie close against the` inner face of the rail 5 andare heldnormally projected slightly above the rail in a manner hereinafterdescribed. It

will be seen that if a train passes along the v ing inclined slightlyaway from the post 6 rand being connected between its pivot and itsupper end with the lower end of the vertical portion of` Vthe angularlever 9 through the medium otra connecting-rod 1S, and thus when a trainruns upon the links 13 and 14 and depresses them the lever '17 is movedupon its pivot in a direction away from the post 6 and the lever 9 isactuated to lower the gate into operative position. As soon as the trainleaves the links 13 and 14 the weight of the end S of the gate swingsthe gate to vertical position and operates the lever 9 to return `thelever 17 and raise the links 13 and 14. It will thus be seen that thetrain acts to shut the gate and that when the gate is released itautomatically swings to its inoperative position.

What is claimed isf 1. In a device of the class described, thecombination with a trackway anda rail thereof, of a supporting-post, agate pivoted upon the post, links pivotally connected at their adjacentends, oneof said links being hinged to a support and the other linkbeing` free for slidable movement, said links being disposed to projectwith their connecting ends above a IOO rail of the trackway, a leverpivoted beneath the links and disposed with its free end therebeneath,said lever being inclined in the direction of sliding movement of thesecond link When the links are depressed, connections between the leverand the gate for levering the latter, and a connterbalance upon the gatefor raising it and returning the lever and links.

I 2. The combination with a trackway and a rail thereof, of asupporting-post having a gate pivoted'thereon, an angular lever pivotedto the post, a shaft on which the gate is mounted, said shaft having acrank-arm, connections between the angular lever and the crank-arm foroperating one from the other, links pivotally connected at their ad`jacent ends and adapted to lie With said adjacent ends above and closeto the rail, one of the links having its outer end hinged to a supportwhereby when the connected ends of the links are depressed the otherlink will be moved bodily from the post, a lever pivoted beneath thelinks, said lever being inclined in the direction of sliding movement ofthe bodily-movable link when the links are de JOHN BOWMAN.

Witnesses:

J. A. MILBURN, I-I. A. PEIRCE.

